Narrative:

Mechanical failure: after completing a normal takeoff and associated procedures, the left main gear failed to restart. Indications were: red 'doors' light, red 'in-transit' light, and amber 'left-hand gear or door' light illuminated. Aircraft was stabilized in a climb at 200 KIAS and flaps 4 degrees and a climb to 10000 ft MSL was completed. While being vectored by departure control in the radar pattern, the captain and so performed the 'in transit gear or door light on after retraction' checklist. These procedures did not correct the problem and the procedures directed a landing at the nearest suitable airport. The decision was made to return to atl. After completing all of the malfunction checklists, the end result was gear down and locked, with a safe 'green' indication. Emergency equipment was requested to be available on landing. A normal approach and landing to runway 27R was accomplished with no difficulties (landing weight 355000 pounds). The aircraft was returned to the gate. ATC conflict: while being radar vectored in the radar pattern, our position was approximately 22 DME east of atl. We had informed ATC that we had completed our analysis and troubleshooting of the gear problem and we were ready to return to atl. Up until this time, we were being vectored by departure control and they had assigned us a 330 degree heading to position us for a left base to runway 27R. It was at this time we were handed off to atl approach and were unable to check in due to frequency congestion. This last 330 degree heading assigned by departure, appeared to put us in conflict with aircraft Y on a right base to runway 26R on the north complex. We did receive a TA on TCASII followed by an urgent directive by approach control to make an immediate right turn to 090 degrees, at the same time they directed aircraft Y to make an immediate turn to 270 degrees. Separation appeared to be minimal with 1 - 1 1/2 mi separation -- both at 4000 ft. The turns were completed and later approach and landing were completed uneventfully.

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Original NASA ASRS Text

Title: RPTR'S ACFT X WAS RETURNING TO ATL BECAUSE OF A GEAR PROB. WHILE BEING VECTORED TO THE RWY, ACFT X CAME WITHIN CLOSE PROX OF ACFT Y ON APCH TO THE ADJACENT RWY. STANDARD SEPARATION WAS LOST.

Narrative: MECHANICAL FAILURE: AFTER COMPLETING A NORMAL TKOF AND ASSOCIATED PROCS, THE L MAIN GEAR FAILED TO RESTART. INDICATIONS WERE: RED 'DOORS' LIGHT, RED 'IN-TRANSIT' LIGHT, AND AMBER 'L-HAND GEAR OR DOOR' LIGHT ILLUMINATED. ACFT WAS STABILIZED IN A CLB AT 200 KIAS AND FLAPS 4 DEGS AND A CLB TO 10000 FT MSL WAS COMPLETED. WHILE BEING VECTORED BY DEP CTL IN THE RADAR PATTERN, THE CAPT AND SO PERFORMED THE 'IN TRANSIT GEAR OR DOOR LIGHT ON AFTER RETRACTION' CHKLIST. THESE PROCS DID NOT CORRECT THE PROB AND THE PROCS DIRECTED A LNDG AT THE NEAREST SUITABLE ARPT. THE DECISION WAS MADE TO RETURN TO ATL. AFTER COMPLETING ALL OF THE MALFUNCTION CHKLISTS, THE END RESULT WAS GEAR DOWN AND LOCKED, WITH A SAFE 'GREEN' INDICATION. EMER EQUIP WAS REQUESTED TO BE AVAILABLE ON LNDG. A NORMAL APCH AND LNDG TO RWY 27R WAS ACCOMPLISHED WITH NO DIFFICULTIES (LNDG WT 355000 LBS). THE ACFT WAS RETURNED TO THE GATE. ATC CONFLICT: WHILE BEING RADAR VECTORED IN THE RADAR PATTERN, OUR POS WAS APPROX 22 DME E OF ATL. WE HAD INFORMED ATC THAT WE HAD COMPLETED OUR ANALYSIS AND TROUBLESHOOTING OF THE GEAR PROB AND WE WERE READY TO RETURN TO ATL. UP UNTIL THIS TIME, WE WERE BEING VECTORED BY DEP CTL AND THEY HAD ASSIGNED US A 330 DEG HDG TO POS US FOR A L BASE TO RWY 27R. IT WAS AT THIS TIME WE WERE HANDED OFF TO ATL APCH AND WERE UNABLE TO CHK IN DUE TO FREQ CONGESTION. THIS LAST 330 DEG HDG ASSIGNED BY DEP, APPEARED TO PUT US IN CONFLICT WITH ACFT Y ON A R BASE TO RWY 26R ON THE N COMPLEX. WE DID RECEIVE A TA ON TCASII FOLLOWED BY AN URGENT DIRECTIVE BY APCH CTL TO MAKE AN IMMEDIATE R TURN TO 090 DEGS, AT THE SAME TIME THEY DIRECTED ACFT Y TO MAKE AN IMMEDIATE TURN TO 270 DEGS. SEPARATION APPEARED TO BE MINIMAL WITH 1 - 1 1/2 MI SEPARATION -- BOTH AT 4000 FT. THE TURNS WERE COMPLETED AND LATER APCH AND LNDG WERE COMPLETED UNEVENTFULLY.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.